EHCC greatly assists with processing of data.
Infiniband also helps with the transfer of data as well - not just between the database nodes and Exadata storage cells but also when ingesting the data from the sources as well (i.e. the data warehouse is not a bottleneck).
Backup and recovery is faster which means unlike many data
warehouses which their DR plan mainly consist of complete reload from
sources, this provides a true DR and even better DR via data guard than
simply "rebuild".
Unanticipated queries where
you do not have cubes or views developed aren't such an issue either.
Exadata is able to address the unanticipated ones. And these can be the
most valuable ones too - new questions that result in more improvement
over previous ways.
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